[PATCH v4 15/83] buildman: Correct operation of MAINTAINERS N:

[Simon Glass]

This doesn't work as intended. Instead it scans every defconfig file
in the source tree.

Fix it and add a test.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v4:
- Use search() instead of fullmatch() to allow partial matches

Changes in v3:
- Add new patch to correct operation of MAINTAINERS N:

 tools/buildman/boards.py    | 15 ++++++++++-----
 tools/buildman/func_test.py | 17 +++++++++++++----
 2 files changed, 23 insertions(+), 9 deletions(-)

Applied to u-boot-dm, thanks!